[PATCH] arm64: dts: mt8173: Fix cpu_thermal cooling-maps contributions
From: matthias.bgg@gmail.com (Matthias Brugger)
Date: 2017-01-13 15:36:38
Also in:
linux-devicetree, linux-mediatek, lkml
On 13/01/17 03:30, Daniel Kurtz wrote:
According to [0], the contribution field for each cooling-device express their relative power efficiency. Higher weights express higher power efficiency. Weighting is relative such that if each cooling device has a weight of 1 they are considered equal. This is particularly useful in heterogeneous systems where two cooling devices may perform the same kind of compute, but with different efficiency. [0] Documentation/thermal/power_allocator.txt According to Mediatek IC designer, the power efficiency ratio between the LITTLE core cluster (cooling-device cpu0) and big core cluster (cooling-device cpu1) is around 3:1 (3072:1024). Signed-off-by: Daniel Kurtz <redacted> --- arch/arm64/boot/dts/mediatek/mt8173.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
applied, thanks.
quoted hunk ↗ jump to hunk
diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi index 12e702771f5c..9a3b0d20f7a8 100644 --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi@@ -182,12 +182,12 @@ map at 0 { trip = <&target>; cooling-device = <&cpu0 0 0>; - contribution = <1024>; + contribution = <3072>; }; map at 1 { trip = <&target>; cooling-device = <&cpu2 0 0>; - contribution = <2048>; + contribution = <1024>; }; }; };